1. December 2005Introduction to Post-processing 1144 10 th Avenue, Suite 200 Honolulu, HI 96816-2442 (808) 539-3706 info@oicinc.com Software Services Systems Oceanic Imaging Consultants, Inc. Professional seafloor mapping software, created by surveyors, for surveyors

2. December 2005Introduction to Post-processing A Brief Introduction Post-Processing

3. December 2005Introduction to Post-processing What is “Post-processing”? Technically, post-acquisition processing GeoDAS can process in real-time but: –Post-processing allow more flexibility and power in detecting and dealing with data noise and image artifacts. –Post-processing tools allow you to review all your data, for creation of better mission products

4. December 2005Introduction to Post-processing Why Do Post-processing? Clean up noise in the data Remove data artifacts Make mission products, –Maps –DEM’s –Target locations

5. December 2005Introduction to Post-processing Typical sidescan artifacts Beam Pattern Artifacts Bottom-tracking Errors Gain Changes

6. December 2005Introduction to Post-processing Typical Bathymetry Artifacts Depth outliers (noisy data)

7. December 2005Introduction to Post-processing Typical navigation and heading Noisy navigation and heading data

8. December 2005Introduction to Post-processing OIC Options for Post-processing GeoDAS-Desktop. –Economic solution for data replay, navigation editing and production of simple mosaics. OICToolkit. –UNIX-based full-featured post-processing package. OICcleansweep. –New, PC-based post-processing package for sidescan and bathymetry.

9. December 2005Introduction to Post-processing Introducing OICcleansweep: Post-processing for Windows

10. December 2005Introduction to Post-processing OICcleansweep Retains many of the features of OICToolkit –“swath-based” processing –“point & click” selection of data –Interactive editing of gains & bottom-tracking Adds new, more powerful features –Better data and swath bookkeeping –Navigation “wizard” to aid in sensor re-nav –“Quality” based filtering for bathymetry –More powerful mosaicking tool allows interactive blending of multiple swaths –Target-marking tool allows clipping of full-resolution GeoTIFFs from sidescan, and pasting them on mosaics

11. December 2005Introduction to Post-processing Superimposition of EOID GeoTIFF Target Snippets on Sidescan Mosaic